PHP变量的sublime文本颜色方案

I'm trying to create something that will color my variables in PHP. I cannot seem to find any themes that do this already in Sublime Text 2 or 3. I have "PHP" selected as a code type.

I found at minimum I am able to color the dollar sign in $foo with this code:

<dict>
    <key>name</key>
    <string>Variable start</string>
    <key>scope</key>
    <string>punctuation.definition.variable</string>
    <key>settings</key>
    <dict>
        <key>fontStyle</key>
        <string>bold</string>
        <key>foreground</key>
        <string>#a08bfd</string>
    </dict>
</dict>

While this changes the literal dollar sign, it does not affect the text after it. How do I go about this?

Add this block code to set the color of the rest of var :

    <dict>
        <key>name</key>
        <string>Variables</string>
        <key>scope</key>
        <string>variable</string>
        <key>settings</key>
        <dict>
            <key>foreground</key>
            <string>#a08bfd</string>
        </dict>
    </dict>